CN215427485U - Backwashing device and filtering system with same - Google Patents

Abstract

The utility model discloses a backwashing device and a filtering system with the backwashing device, wherein the backwashing device comprises a filtering body, a liquid inlet pipe and a liquid outlet pipe, a backwashing area is arranged in the filtering body, filtering materials are filled in the backwashing area, the filtering body is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are communicated with the backwashing area, the liquid inlet pipe is communicated with the liquid inlet, the liquid outlet pipe is communicated with the liquid outlet, an included angle is formed between the axial direction of the liquid inlet pipe and the circumferential direction of the filtering body, and an included angle is formed between the axial direction of the liquid outlet pipe and the circumferential direction of the filtering body, so that liquid entering the backwashing area from the liquid inlet pipe drives the filtering materials to rotate so as to flush the filtering materials and flow out from the liquid outlet pipe. The back washing device has large impact force and good washing effect.

Description

Backwashing device and filtering system with same

Technical Field

The utility model relates to the technical field of filtration, in particular to a backwashing device and a filtration system with the backwashing device.

Background

The filtering system is a common device in the filtering process, and is not only applied to the industrial fields of mining industry, coal, chemical industry and the like, but also widely applied to the field of water treatment. The filtering system can subject the solution containing the impurities to a filtering separation treatment to remove solid pollutants in the solution.

In the related art, a backwashing device is arranged in the filtering system, and after the filtering system is used for a period of time, the backwashing device is used for backwashing the filtering system so as to clean a viscous filtering layer in the filtering system.

Specifically, the suspended filter material is suspended in water, floats in water under the action of upward buoyancy, and is extruded to form a filter layer, and after a filtering system filters for a period of time, a large amount of solid particles are blocked in gaps of the filter layer, so that the filter layer is hardened due to the factors such as the viscosity of the particles and the viscosity of a flocculating agent. The impact force of backwashing water in the related art is small, and a hardened filter layer cannot be scattered, so that the backwashing effect is poor.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of one aspect of the utility model provides a backwashing device which has large impact force and good washing effect.

An embodiment of another aspect of the utility model provides a filtration system.

A backwash device according to an embodiment of the first aspect of the present invention includes: the filter comprises a filter body, wherein a back-flushing area is arranged in the filter body, filter materials are filled in the back-flushing area, the filter body is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the back-flushing area; feed liquor pipe and drain pipe, the feed liquor pipe with the inlet intercommunication, the drain pipe with the liquid outlet intercommunication, the axial of feed liquor pipe with become the contained angle between the circumference of filtering the body, the axial of drain pipe with become the contained angle between the circumference of filtering the body, so that follow the feed liquor pipe gets into liquid in the backwash district drives the filter material is rotatory in order to wash the filter material just follows the drain pipe flows.

According to the backwashing device provided by the embodiment of the utility model, when the filter material in the backwashing area needs to be cleaned, liquid is introduced into the liquid inlet pipe, and the liquid after the filter material is cleaned is discharged from the liquid outlet pipe. Because the axial direction of the liquid inlet pipe and the circumferential direction of the filter body form an included angle, and the axial direction of the liquid outlet pipe and the circumferential direction of the filter body form an included angle, when liquid enters or is discharged from the backwashing area, the liquid can drive the filter materials to do circumferential rotation motion, so that the filter materials collide with each other and are repeatedly kneaded, and the purpose of cleaning the filter materials is achieved. Therefore, the backwashing device provided by the embodiment of the utility model has large impact force on the filter material and good washing effect.

In some embodiments, the filter body is cylindrical, and in a cross section of the filter body, an axial direction of the liquid inlet pipe is tangential to a circumferential direction of the filter body, and an axial direction of the liquid outlet pipe is tangential to the circumferential direction of the filter body.

In some embodiments, an axial direction of the liquid inlet pipe is substantially parallel to an axial direction of the liquid outlet pipe.

In some embodiments, the liquid inlet pipe and the liquid outlet pipe are arranged at intervals in the axial direction of the filter body, and the liquid inlet pipe is located above the liquid outlet pipe.

In some embodiments, the backwash assembly further comprises an annular distributor located within the backwash zone and having an axial direction parallel to an axial direction of the filter body.

In some embodiments, the annular distributor includes a ring body, a main pipe and branch pipes, an annular flow channel is provided in the ring body, one end of the main pipe is communicated with the annular flow channel, the other end of the main pipe is communicated with the liquid inlet pipe, the branch pipes are communicated with the annular flow channel and the backwashing region, an included angle is formed between the axial direction of the branch pipes and the circumferential direction of the ring body, the branch pipes are arranged in a plurality, and the branch pipes are arranged along the circumferential direction of the ring body at intervals, so that liquid flowing into the backwashing region from the branch pipes drives the filter material to rotate.

In some embodiments, in a cross-section of the ring distributor, a length direction of the plurality of branch pipes is tangential to a circumference of the ring body.

In some embodiments, the annular distributor is a plurality of annular distributors each located within the backwash zone, the plurality of annular distributors being arranged at intervals in an axial direction of the filter body.

In some embodiments, in the plurality of ring distributors, a part of the liquid flowing out of the ring distributors drives the filter material in the backwashing region to rotate in the forward direction, and another part of the liquid flowing out of the ring distributors drives the filter material in the backwashing region to rotate in the reverse direction.

A filtration system according to an embodiment of the second aspect of the utility model comprises a backflushing device as described in any of the embodiments above.

The filtering system provided by the embodiment of the utility model has the advantages of good backwashing effect and high filtering efficiency.

Drawings

Fig. 1 is a plan view of a backwashing apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a backwash assembly according to an embodiment of the present invention.

FIG. 3 is a top view of the annular distributor of the backwash assembly of the embodiment of the present invention.

Reference numerals:

1. a filter body; 11. a backwash zone; 12. a liquid inlet; 13. a liquid outlet;

2. a liquid inlet pipe;

3. a liquid outlet pipe;

4. an annular distributor; 41. a ring body; 42. a main pipe; 43. and (4) branch pipes.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

A backwash device and a filter system according to an embodiment of the present invention will be described below with reference to fig. 1 to 3.

As shown in fig. 1 and 2, the backwashing apparatus according to the embodiment of the present invention includes a filter body 1, a liquid inlet pipe 2, and a liquid outlet pipe 3. A back washing area 11 is arranged in the filter body 1, and the back washing area 11 is filled with filter materials. The filtering body 1 is provided with a liquid inlet 12 and a liquid outlet 13, and the liquid inlet 12 and the liquid outlet 13 are communicated with the back washing area 11. The liquid inlet pipe 2 is communicated with a liquid inlet 12, and the liquid outlet pipe 3 is communicated with a liquid outlet 13. The liquid inlet pipe 2 can feed liquid into the back washing area 11 through a liquid inlet 12, and the liquid outlet pipe 3 can discharge the liquid in the back washing area 11 through a liquid outlet 13.

As shown in fig. 1, an included angle is formed between the axial direction of the liquid inlet pipe 2 and the circumferential direction of the filter body 1, and an included angle is formed between the axial direction of the liquid outlet pipe 3 and the circumferential direction of the filter body 1, so that the liquid entering the back washing zone 11 from the liquid inlet pipe 2 drives the filter material to rotate so as to wash the filter material and flow out from the liquid outlet pipe 3.

According to the backwashing device provided by the embodiment of the utility model, when the filter material in the backwashing area 11 needs to be cleaned, liquid is introduced into the liquid inlet pipe 2, and the liquid after the filter material is cleaned is discharged from the liquid outlet pipe 3. Because the axial of feed liquor pipe 2 and the circumference of filtering body 1 between become the contained angle, become the contained angle between the axial of drain pipe 3 and the circumference of filtering body 1, so when liquid gets into or discharges backwash district 11, liquid can drive the filter material and make circumferential rotary motion for the filter material collides each other and rubs repeatedly, thereby reaches the abluent purpose of filter material. Therefore, the backwashing device provided by the embodiment of the utility model has large impact force on the filter material and good washing effect.

Further, as shown in fig. 1 and 2, the filter body 1 is cylindrical, and on the cross section of the filter body 1, the axial direction of the liquid inlet pipe 2 is tangential to the circumferential direction of the filter body 1, and the axial direction of the liquid outlet pipe 3 is tangential to the circumferential direction of the filter body 1. It can be understood that the liquid introduced from the liquid inlet pipe 2 into the liquid inlet 12 enters the backwashing region 11 along the circumferential tangent line of the filter body 1 to generate a shearing force on the filter material in the backwashing region 11, so that the liquid can push the filter material to rotate circumferentially, and then the liquid after being cleaned is discharged from the liquid outlet pipe 3 to the outside of the filter body 1 along the circumferential tangent line of the filter body 1, thereby reducing the energy loss of the liquid and improving the impact force of the backwashing device of the embodiment of the utility model.

Alternatively, as shown in fig. 1, the axial direction of the liquid inlet pipe 2 is substantially parallel to the axial direction of the liquid outlet pipe 3. In other words, the liquid inlet pipe 2 and the liquid outlet pipe 3 are arranged along the radial direction of the filter body 1 at intervals so as to prolong the hydraulic retention time of liquid entering the backwashing region 11, thereby improving the cleaning effect of the filter material.

Alternatively, as shown in fig. 1 and 2, the liquid inlet pipe 2 and the liquid outlet pipe 3 are arranged at intervals in the axial direction (up-down direction as shown in fig. 2) of the filter body 1, and the liquid inlet pipe 2 is located above the liquid outlet pipe 3. As shown in fig. 1 and 2, the liquid inlet pipe 2 and the liquid outlet pipe 3 are arranged in the up-down direction, and the liquid inlet pipe 2 and the liquid outlet pipe 3 are not arranged in a horizontal plane, so that when liquid enters from the liquid inlet pipe 2 and exits from the liquid outlet pipe 3, spiral vortex can be generated in the back washing area 11, thereby further improving the cleaning effect of the filter material.

In some embodiments, as shown in fig. 1 and 3, the backflushing device further comprises an annular distributor 4, the annular distributor 4 being located in the backflushing zone 11, and the axial direction of the annular distributor 4 being parallel to the axial direction of the filter body 1.

Preferably, the axis of the annular distributor 4 coincides with the axis of the filtering body 1. In other words, the annular distributor 4 and the filtering body 1 are arranged coaxially.

Specifically, as shown in fig. 3, the ring distributor 4 includes a ring body 41, a main pipe 42, and branch pipes 43. An annular flow passage is arranged in the ring body 41, one end of the main pipe 42 is communicated with the annular flow passage, and the other end of the main pipe 42 is communicated with the liquid inlet pipe 2. The branch pipe 43 is communicated with the annular flow passage and the backwashing area 11, and the axial direction of the branch pipe 43 forms an included angle with the circumferential direction of the ring body 41. The branch pipes 43 are plural, and the plural branch pipes 43 are arranged at intervals in the circumferential direction of the ring body 41.

The liquid enters the annular distributor 4 through the liquid inlet pipe 2 and is then uniformly distributed to the branch pipes 43 through the annular flow channels in the annular body 41. Because the axial direction of each branch pipe 43 forms an included angle with the circumferential direction of the ring body 41, the liquid flowing into the backwashing region 11 from the plurality of branch pipes 43 can drive the filter material to rotate.

Alternatively, as shown in fig. 3, the length direction of the plurality of branch pipes 43 is tangential to the circumferential direction of the ring body 41. It is understood that the length direction of the plurality of branch pipes 43 may be inscribed in the circumferential direction of the ring body 41, or may be circumscribed. For example, the branch pipes 43 have an arc-like configuration, and the inner periphery of the main pipe 42 is inscribed in the outer periphery of the branch pipes 43. In other words, the length direction of the branch pipes 43 is inscribed in the circumferential direction of the ring body 41.

Further, as shown in fig. 2 and 3, the annular distributor 4 is plural, the plural annular distributors 4 are each located in the back washing zone 11, and the plural annular distributors 4 are arranged at intervals in the axial direction of the filter body 1.

Preferably, in the plurality of annular distributors 4, the filter material in the backwashing region 11 is driven to rotate in the forward direction by the liquid flowing out of one part of the annular distributors 4, and the filter material in the backwashing region 11 is driven to rotate in the reverse direction by the liquid flowing out of the other part of the annular distributors 4.

In other words, the filter material in the backwash zone 11 is positively rotated by the liquid flowing out of a part of the plurality of ring distributors 4, and it is understood that the liquid discharge ports of the branch pipes 43 of a part of the ring distributors 4 are arranged clockwise along the ring body 41, so that the filter material is positively rotated by the liquid discharged from the branch pipes 43. The filter material in the backwashing region 11 is driven to rotate reversely by the liquid flowing out from another part of the ring distributors 4 in the plurality of ring distributors 4, and it can also be understood that the liquid outlet ports of the branch pipes 43 of another part of the ring distributors 4 are arranged along the counterclockwise direction of the ring body 41, so that the filter material is driven to rotate reversely by the liquid discharged from the branch pipes 43.

Preferably, the directions of the branch pipes 43 of the two adjacent ring distributors 4 are opposite, so that the two liquid water flows with different rotation directions generate huge shearing force on the filter material, and the filter material is repeatedly collided and kneaded, thereby further improving the cleaning effect of the filter material.

A filtration system according to an embodiment of another aspect of the present invention includes a backwash assembly according to an embodiment of the present invention.

The filtering system provided by the embodiment of the utility model has the advantages of good backwashing effect and high filtering efficiency.

Backwash devices and filtration systems according to some specific examples of the utility model are described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, a filtration system according to an embodiment of the present invention includes a backwashing device, which is a backwashing device according to an embodiment of the present invention. The backwashing device according to the embodiment of the utility model comprises a filter body 1, a liquid inlet pipe 2, a liquid outlet pipe 3 and an annular distributor 4.

As shown in fig. 2, the filter body 1 is cylindrical, a back-flushing area 11 is arranged in the filter body 1, the back-flushing area 11 is filled with granular filter materials, a liquid inlet 12 and a liquid outlet 13 are arranged on the side wall of the filter body 1, the liquid inlet 12 and the liquid outlet 13 are communicated with the back-flushing area 11, the liquid inlet pipe 2 is communicated with the liquid inlet 12, and the liquid outlet pipe 3 is communicated with the liquid outlet 13. The liquid inlet pipe 2 can feed liquid into the back washing area 11 through a liquid inlet 12, and the liquid outlet pipe 3 can discharge the liquid in the back washing area 11 through a liquid outlet 13.

As shown in fig. 1, on the cross section of the filtering body 1, the axial direction of the liquid inlet pipe 2 is tangent to the circumferential direction of the filtering body 1, and the axial direction of the liquid outlet pipe 3 is tangent to the circumferential direction of the filtering body 1, so that the liquid entering the back washing zone 11 from the liquid inlet pipe 2 drives the filter material to rotate to wash the filter material and flow out from the liquid outlet pipe 3.

It can be understood that the liquid introduced from the liquid inlet pipe 2 into the liquid inlet 12 enters the backwashing region 11 along the circumferential tangential direction of the filter body 1 to generate a shearing force on the filter material in the backwashing region 11, so that the liquid can push the filter material to rotate circumferentially, and then the liquid after being cleaned is discharged from the liquid outlet pipe 3 to the outside of the filter body 1 along the circumferential tangential direction of the filter body 1, thereby reducing the energy loss of the liquid and improving the impact force of the backwashing device of the embodiment of the utility model.

As shown in fig. 1 and 2, the axial direction of the liquid inlet pipe 2 is parallel to the axial direction of the liquid outlet pipe 3, and the liquid inlet pipe 2 and the liquid outlet pipe 3 are arranged at intervals up and down in the length direction of the filter body 1.

As shown in fig. 3, the annular distributor 4 is located in the backwashing region 11, the annular distributor 4 includes a ring body 41, a main pipe 42 and branch pipes 43, an axial direction of the ring body 41 coincides with an axial direction of the filter body 1, an annular flow passage is provided in the ring body 41, one end of the main pipe 42 is communicated with the annular flow passage, the other end of the main pipe 42 is communicated with the liquid inlet pipe 2, the branch pipes 43 are communicated with the annular flow passage and the backwashing region 11, an axial direction of the branch pipes 43 is tangential to a circumferential direction of the ring body 41, the number of the branch pipes 43 is plural, and the plural branch pipes 43 are arranged at intervals along the circumferential direction of the ring body 41. The liquid enters the annular distributor 4 through the liquid inlet pipe 2 and is then uniformly distributed to the branch pipes 43 through the annular flow channels in the annular body 41. Since the axial direction of each branch pipe 43 is tangential to the circumferential direction of the ring body 41, the filter material can be rotated by the liquid flowing from the plurality of branch pipes 43 into the backwash zone 11.

Further, the annular distributor 4 is plural, the plural annular distributors 4 are all located in the back washing zone 11, and the plural annular distributors 4 are arranged at intervals in the axial direction of the filter body 1. In the plurality of annular distributors 4, the liquid flowing out of one part of the annular distributors 4 drives the filter material in the backwashing region 11 to rotate forward, and the liquid flowing out of the other part of the annular distributors 4 drives the filter material in the backwashing region 11 to rotate reversely.

It will be understood that the discharge openings of the branch pipes 43 of a portion of the ring distributor 4 are oriented clockwise of the ring 41, as shown in figure 3, so that the filter material is pushed by the liquid discharged from the branch pipes 43 to rotate in a forward direction; the liquid discharge ports of the branch pipes 43 of the other part of the ring distributor 4 are oriented in the counterclockwise direction of the ring body 41 so that the filter material is pushed to rotate in the reverse direction by the liquid discharged from the branch pipes 43. For example, the directions of the branch pipes 43 of the two ring distributors 4 adjacent to each other up and down are opposite, so that the two liquid water flows with different rotation directions generate huge shearing force on the filter material, and the filter material is repeatedly collided and kneaded, thereby further improving the cleaning effect of the filter material.

The filtering system provided by the embodiment of the utility model has the advantages of good backwashing effect and high filtering efficiency.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A backwash device characterized by comprising:

the filter comprises a filter body, wherein a back-flushing area is arranged in the filter body, filter materials are filled in the back-flushing area, the filter body is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the back-flushing area;

a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe is communicated with the liquid inlet, the liquid outlet pipe is communicated with the liquid outlet,

the axial direction of feed liquor pipe with become the contained angle between the circumference of filtering the body, the axial of drain pipe with become the contained angle between the circumference of filtering the body to the messenger follows the feed liquor pipe gets into liquid in the backwash district drives the filter material is rotatory in order to wash the filter material just follows the drain pipe flows out.

2. The backwash device as claimed in claim 1, wherein the filter body is cylindrical, and the axial direction of the liquid inlet pipe is tangential to the circumferential direction of the filter body and the axial direction of the liquid outlet pipe is tangential to the circumferential direction of the filter body in the cross section of the filter body.

3. The backwash device as defined in claim 2, wherein an axial direction of the liquid inlet pipe is substantially parallel to an axial direction of the liquid outlet pipe.

4. The backwash device as defined in claim 2, wherein the liquid inlet pipe and the liquid outlet pipe are arranged at a spacing in an axial direction of the filter body, and the liquid inlet pipe is located above the liquid outlet pipe.

5. The backflushing apparatus according to claim 2 further comprising an annular distributor located within the backflushing zone with an axial direction of the annular distributor being parallel to an axial direction of the filter body.

6. The backwashing device of claim 5, wherein the annular distributor comprises an annular body, a main pipe and branch pipes, an annular flow channel is arranged in the annular body, one end of the main pipe is communicated with the annular flow channel, the other end of the main pipe is communicated with the liquid inlet pipe, the branch pipes are communicated with the annular flow channel and the backwashing area, the axial direction of each branch pipe forms an included angle with the circumferential direction of the annular body, the number of the branch pipes is multiple, and the plurality of the branch pipes are arranged at intervals along the circumferential direction of the annular body, so that liquid flowing into the backwashing area from the plurality of the branch pipes drives the filter material to rotate.

7. The backflushing apparatus according to claim 6 wherein, in the cross section of the ring distributor, the length direction of the plurality of branch pipes is tangential to the circumference of the ring body.

8. The backflushing apparatus according to claim 6 wherein said annular distributor is plural, plural said annular distributors each being located within said backflushing zone, plural said annular distributors being spaced axially of said filter body.

9. The backflushing apparatus according to claim 8, wherein in the plurality of annular distributors, a portion of the liquid discharged from the annular distributors drives the filter material in the backflushing zone to rotate in a forward direction, and another portion of the liquid discharged from the annular distributors drives the filter material in the backflushing zone to rotate in a reverse direction.

10. A filtration system comprising a backflushing apparatus according to any one of claims 1 to 9.

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